[llvm] [DWARFVerifier] Allow overlapping ranges for ICF-merged functions (PR #117952)

[via llvm-commits]

================
@@ -622,7 +627,8 @@ unsigned DWARFVerifier::verifyDieRanges(const DWARFDie &Die,
   }
 
   // Verify that children don't intersect.
-  const auto IntersectingChild = ParentRI.insert(RI);
+  bool AllowDuplicates = Die.getTag() == DW_TAG_subprogram;
----------------
alx32 wrote:

I was wanting to restrict this change to scenarios that I am familiar with / I'm trying to address. I am not sure about the implications for allowing duplicates for anything else. But if is clear that the right choice is to allow full overlaps for all tags - then I can make that change. 

https://github.com/llvm/llvm-project/pull/117952